21688740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1193}}^1$

素因数の和:1309

約数の個数: 72

約数和(自身を含む): 66496248

約数和(自身を除く): 44807508

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1193, 1212, 1515, 1818, 2020, 2386, 3030, 3579, 3636, 4545, 4772, 5965, 6060, 7158, 9090, 10737, 11930, 14316, 17895, 18180, 21474, 23860, 35790, 42948, 53685, 71580, 107370, 120493, 214740, 240986, 361479, 481972, 602465, 722958, 1084437, 1204930, 1445916, 1807395, 2168874, 2409860, 3614790, 4337748, 5422185, 7229580, 10844370, 21688740]

約数ペア:

[(1, 21688740), (2, 10844370), (3, 7229580), (4, 5422185), (5, 4337748), (6, 3614790), (9, 2409860), (10, 2168874), (12, 1807395), (15, 1445916), (18, 1204930), (20, 1084437), (30, 722958), (36, 602465), (45, 481972), (60, 361479), (90, 240986), (101, 214740), (180, 120493), (202, 107370), (303, 71580), (404, 53685), (505, 42948), (606, 35790), (909, 23860), (1010, 21474), (1193, 18180), (1212, 17895), (1515, 14316), (1818, 11930), (2020, 10737), (2386, 9090), (3030, 7158), (3579, 6060), (3636, 5965), (4545, 4772)]